Function maxDepth

maximum_depth_of_binary_tree_104/solution.go:8–16

(root *TreeNode)

)

func maxDepth(root *TreeNode) int {
	if root == nil {
		return 0
	}

	return int(math.Max(
		float64(1+maxDepth(root.Left)),
		float64(1+maxDepth(root.Right))))
}